This is totally off Linux subject, but lets see what scores you get. Here is an excellent test for colour.http://www.xrite.com/custom_page.aspx?PageID=77
It seems men are better than woman at this according to the info on the site. I took the test and got a perfect '0'. The lower the score the better and 0 is the best. Not bad for a morphined brain 52 year old
All you do is drag the colours until you have arranged the hughes correctly and put your score here. Should be interesting to see if the woman here (are there many as a matter of fact? As all I see are male names) do better than stated in the comments.